Photometric observations of the K2-22 system Virtual Observatory Resource

Authors
  1. Colon K.D.
  2. Zhou G.
  3. Shporer A.
  4. Collins K.A.
  5. Bieryla A.
  6. Espinoza N.,Murgas F.
  7. Pattarakijwanich P.
  8. Awiphan S.
  9. Armstrong J.D.
  10. Bailey J.,Barentsen G.
  11. Bayliss D.
  12. Chakpor A.
  13. Cochran W.D.
  14. Dhillon V.S.
  15. Horne K.,Ireland M.
  16. Kedziora-Chudczer L.
  17. Kielkopf J.F.
  18. Komonjinda S.
  19. Latham D.W.,Marsh T.R.
  20. Mkrtichian D.E.
  21. Palle E.
  22. Ruffolo D.
  23. Sefako R.
  24. Tinney C.G.,Wannawichian S.
  25. Yuma S.
  26. Published by
    CDS
Abstract

We present 45 ground-based photometric observations of the K2-22 system collected between 2016 December and 2017 May, which we use to investigate the evolution of the transit of the disintegrating planet K2-22b. Last observed in early 2015, in these new observations we recover the transit at multiple epochs and measure a typical depth of <1.5%. We find that the distribution of our measured transit depths is comparable to the range of depths measured in observations from 2014 and 2015. These new observations also support ongoing variability in the K2-22b transit shape and time, although the overall shallowness of the transit makes a detailed analysis of these transit parameters difficult. We find no strong evidence of wavelength-dependent transit depths for epochs where we have simultaneous coverage at multiple wavelengths, although our stacked Las Cumbres Observatory data collected over days-to-months timescales are suggestive of a deeper transit at blue wavelengths. We encourage continued high-precision photometric and spectroscopic monitoring of this system in order to further constrain the evolution timescale and to aid comparative studies with the other few known disintegrating planets.

Keywords
  1. variable-stars
  2. photometry
  3. visible-astronomy
  4. infrared-photometry
  5. stellar-radii
  6. exoplanets
Bibliographic source Bibcode
2018AJ....156..227C
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/156/227
IVOA Identifier IVOID
ivo://CDS.VizieR/J/AJ/156/227
Document Object Identifer DOI
doi:10.26093/cds/vizier.51560227

Access

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http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/156/227
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/156/227
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/156/227
IVOA Table Access TAP
http://tapvizier.cds.unistra.fr/TAPVizieR/tap
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History

2019-04-25T14:34:24Z
Resource record created
2019-04-25T14:34:24Z
Created
2019-09-03T09:06:36Z
Updated

Contact

Name
CDS support team
Postal Address
CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
E-Mail
cds-question@unistra.fr